Potential Vorticity Dynamics of Coastal Outflows
نویسندگان
چکیده
منابع مشابه
Boundary Effects in Potential Vorticity Dynamics
Many aspects of geophysical flows can be described compactly in terms of potential vorticity dynamics. Since potential temperature can fluctuate at boundaries, however, the boundary conditions for potential vorticity dynamics are inhomogeneous, which complicates considerations of potential vorticity dynamics when boundary effects are dynamically significant. A formulation of potential vorticity...
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The transport of the potential vorticity gradient ∇q along surfaces of constant potential temperature θ is investigated for the stratified Euler, Navier–Stokes and hydrostatic primitive equations of the oceans and atmosphere, in terms of the divergence-less flux vector B = ∇Q(q)×∇θ , for any smooth function Q of the potential vorticity q. The flux vector B is shown to satisfy a transport equati...
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Remarks are made about the status of research on the role of vorticity in fluid dynamics and some unsolved problems of current int,erest are described.
متن کاملTopographic vorticity waves forced by Antarctic dense shelf water outflows
We use numerical simulations to investigate excitation of topographic vorticity waves (TVWs) along the Antarctic continental slope by outflows of dense shelf water through troughs. Idealized models show that wave frequency depends on the amount of stretching in the ambient fluid over the outflow and on background along-slope mean flow. Frequency is higher for steeper bottom slope, larger outflo...
متن کاملM odelling outflows, coastal currents and eddies
Several types of flows driven by outflows on the continental shelf are examined mathematically and numerically. Within a quasigeostrophic framework, a variety of vertical structures and topographies are used. Features are explained in terms of potential vorticity conservation. The combined effects of topography and anomalous vorticity of the outflow are studied. First, shelf-like topography is ...
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ژورنال
عنوان ژورنال: Journal of Physical Oceanography
سال: 2017
ISSN: 0022-3670,1520-0485
DOI: 10.1175/jpo-d-16-0070.1